Green Gaming Chairs

Green

Ergonomic design racing chair designed with efficiency, comfort, and multi-functions to meet everyone’s needs and desires. Metal frame, easy-to-clean artificial leather, removable headrest pillow, and lumbar cushion, make it an ideal seat of choice for working, studying, and gaming. Adjustable backrest with a 90-degree to 170-degree safety angle. Armrest and seat-height adjustment; 360-degree swivel. More efficient at work. More comfortable when gaming.

Excellant value for money easy to order and great payment options and quike delivery. Anonymous. GB. Wed Jul 08 2026

Green

The Muskoka gaming chair is a robust and stylish seating solution, crafted from durable materials including steel and PU faux leather, finished with a sleek leather effect that enhances its modern aesthetic. This chair is available in a variety of colour combinations such as red and black, green and black, blue and black, white and black, and grey and black, allowing you to choose the perfect match for your existing decor. Designed to cater to both avid gamers and casual users, the chair ensures comfort during long gaming sessions or extended periods of desk work. Its adjustable height feature allows for personalized comfort, making it an ideal choice for maintaining ergonomic support throughout your activities.

Really nice chair, would recommend for a teenager it’s not very big. Anonymous. Sat Jul 25 2026

Black/Green

Adjustable gaming entertainment has become an indispensable part of life and work. At the same time, in order to adapt to the discomfort it brings, the requirements for gaming office chairs in life are getting higher. The main function of an ergonomic office chair is to make you feel comfortable, reduce physical fatigue and relax.

Great product. Easy to assemble and great quality. Boys find it very comfortable. And the adjustable parts make it personalised comfort.. Oliver. Sat Aug 15 2026

Green

The X Rocker Shadow 2.0 is the perfect console gaming seat for young gamers, offering immersive sound and all-day comfort in a compact, easy-to-store design. Built with growing gamers in mind, the Shadow 2.0 features a discreet headrest-mounted speaker system that bring the gaming experience to life, compatible with all of the latest consoles. Its low-to-the-ground, stable rocking base encourages natural movement while keeping things grounded and secure. Wrapped in durable faux leather and deep foam padding, the Shadow 2.0 blends cool eSports styling with everyday comfort. When the fun is over, simply fold down the Shadow in seconds for quick and tidy storage—ideal for bedrooms, playrooms, or shared family spaces.

Perfect. Anonymous. Wed Apr 29 2026

Green

Make study fun with the X Rocker Saturn, a compact mid-back office chair that brings style and versatility into the home office or bedroom. Perfectly sized for juniors or smaller adults, the Saturn desk chair features a range of ergonomic settings including a height adjustable, 360-degree swivel pedestal base to adjust to each growing user. Whilst the naturally curving back and fixed armrest design provides extra comfort to outlast many hours of gaming, surfing and homework. A simple ergonomic chair, decked out in soft faux leather material for a stylish twist, and easy clean maintenance.

Very happy with chair.. Wilma. Fraserburgh, GB. Mon Apr 27 2026

Green

All-Day Comfort, Tailored to You Sit, Recline, or Unwind—Experience next-level comfort with a 135° adjustable reclining feature and zero-gravity design that gives you a weightless feel. Whether you’re deep into work, enjoying a break, or catching a quick nap, the full-body cushioning wraps around you for continuous support, all while keeping your posture perfectly aligned

Green

All-Day Comfort, Tailored to You Sit, Recline, or Unwind—Experience next-level comfort with a 135° adjustable reclining feature and zero-gravity design that gives you a weightless feel. Whether you’re deep into work, enjoying a break, or catching a quick nap, the full-body cushioning wraps around you for continuous support, all while keeping your posture perfectly aligned

Green/Black

This gaming chair for kids and young adults aged 5-16 is a fully adjustable tournament gaming chair, sized and designed for junior gaming enthusiasts and growing streamers. It features all of the benefits of a full-sized tournament gaming chair, with fully adjustable armrests, backrest tilt, and neck/lumbar support for staying comfortable during many hours of study or play.

Good quality and arrived quickly!. Eleanor. Port Talbot, GB. Tue Nov 19 2024

Green

The perfect seat for long gaming periods, this faux leather upholstered chair highlights a design that guarantees long-lasting comfort. With the numerous height and armrests adjustment possibilities, you can customize it to your body shape. Added cushioning in the neck and lumbar area offers relief for the spine, and thanks to a pull-out footrest you can fully stretch your legs. If you feel like napping just put the backrest in a fully reclined position and slide out the leg rest.

Naja, etwas wackelig. Nicht für Schwergewichte zu raten. Bei uns haben Vorbohrungen in der Sitzplatte gefehlt. Daher eher nur 2,5 Sterne. Optisch ganz schick.. Isabel. Rohr, DE. Tue Oct 29 2024

Green/Black/White

The RG-Max racing chairs are made with quality materials and also have a great reclining, and lift/tilt mechanism. Designed to offer a combination of luxurious comfort and high-performance style, the RG-Max racing-style office chairs provide outstanding lumbar support because their design encompasses the traditional deep-sided `body-hugging' back and includes a neck pillow. Styled after race car seats and using high-quality materials, RG-Max chairs are extremely comfortable, and affordable, and complement your gamer attitude perfectly whilst being hard-wearing and durable. Featuring supportive seat bolsters, just like a real bucket seat, your posture will be perfect whilst at your desk. The RG-Max seats come with multiple points of adjustability so that you can tailor the position of the seat perfectly.

Great quality gaming chair perfect for what I need. Matthew. Southery Downham Market, GB. Thu Dec 15 2022

The gaming chairs are ergonomic and versatile adjustable. The unique design is focused on comfort to work comfortably even after many hours at the computer, especially to maintain a healthy posture or to allow a good posture while playing games. With 360° swivel casters, adjustable seat height, backrest and adjustable armrests, you can comfortably and effectively get the job done and tackle your opponent.

Terrible bad quality. Ariel. Mon Jul 08 2024

Black/Green

Prepare for a gaming experience like never before with our RG-EDGE Gaming Chair. Engineered for the ultimate comfort and support, this chair is a must for those intense gaming sessions. Affordability makes this chair perfect for younger gamers or students needing practicality without breaking the bank. Sink into a world of unparalleled comfort with the RG-EDGE. Height adjustable to allow a perfect seating position, its comfortable design, complete with padded arm support, ensures that even the longest gaming sessions feel like a breeze. Designed with inspiration from high-performance race car seats, the RG-EDGE combines style and functionality seamlessly. Its dynamic stripes and sleek upholstery not only provide a striking aesthetic but also ensure durability for years of gaming excitement. With its stable base mounted on five smooth-rolling castor wheels, the RG-EDGE offers effortless mobility. Whether you're pivoting for the perfect shot or transitioning between multiple screens, this chair keeps you in control. Unleash the full potential of your gaming sessions with the RG-EDGE Gaming Chair. This is more than a chair; it's your command centre for victory. Elevate your gaming setup and experience a new level of immersion and comfort. Get yours today!

Green

Gaming Chair, Executive Office Desk Chair Ergonomic Computer Chair with Footrest Heavy Duty High Back Lumbar Support Home Recliner Swivel Chair

So comfy and spacious! Looks just like the photo and feels great.. Alicia. Irthlingborough Wellingborough, GB. Mon Jun 01 2026

Green

Fabric Gaming Chair, Ergonomic Computer Chair with Footrest and Lumbar Support Height Adjustable Home Office Chair with 360°-Swivel Seat and Headrest

Excellent delivery, quality - would definately recommend!!. Anonymous. Thu Aug 13 2026

Green

Fabric Gaming Chair, Ergonomic Computer Chair with Footrest Lumbar Support Heavy Duty High Back Adjustable Height Svivel Office Desk Chair

Great chair, looks good and is comfortable. Easy to assemble.. Phil. Newark, GB. Tue May 19 2026

Green, Fabric

Upgraded new ergonomic gaming chair with a unique look and thickly padded for maximum comfort. Extra massaged lumbar vertebrae help relax your waist greatly when lying on the chair during game breaks. Not only can you adjust the height of the chair to suit your needs, but you can also adjust the angle (90 - 136 degrees) of the backrest.

Very comfortable. Ravinder. Great Barr Birmingham, GB. Tue Jun 30 2026

Green

Gaming Chair Fabric, High Back Computer Chairs with Footrest for Adults Ergonomic Lumbar Support Swivel PC Chair for Home Office

Good quality easy to setup really like it Like the colour and feel comfortable The good thing about the Wayfair product is you can return if you not happy with your items. Anonymous. Wed May 13 2026

Green

Fabric Gaming Chair, Ergonomic Computer Chair with Footrest Lumbar Support Heavy Duty High Back Adjustable Height Svivel Office Desk Chair

Amazing chair, good and sturdy. Anonymous. Tue Aug 11 2026

Green

Meet the gaming chair that blends ultimate comfort with adorable personality! Designed especially for pet lovers and gamers who value both style and support.

Amazing chair the most comfortable chair I’ve ever had. Anonymous. Sun Jun 14 2026

Green

Fantastic chair, easy to assemble and arrived very quickly!. Beryl. Balsall Common Coventry, GB. Tue Oct 29 2024

Green

BraZen Stag 2.1 Bluetooth Surround Sound Gaming Chair is in our biased opinion the best pedestal gaming chair on the market for young adults! It is compatible directly or indirectly with all major gaming consoles, televisions, tablets and smart phones. The chair has both Bluetooth and hardwire connectivity options. The BraZen Stag is a genuinely multi-purpose and multi-media chair. It can rightly claim to be a gaming, cinema and music chair all in one! Relax in this chair and play your favourite game, watch that blockbuster movie or listen to that chart busting music. This is the multimedia entertainment chair you could only dream of! You can buy a BraZen Stag Gaming Chair with confidence. The British owned BraZen brand is highly respected because its "no compromise!" approach to price, product quality and aftersales service. The effectiveness of this approach is evidenced by the fact that BraZen have the highest five star rating of any gaming chair brand on Trustpilot.co.uk. BraZen Stag 2.1 Bluetooth Surround Sound Gaming Chair is a very robust comfortable piece of furniture with the added benefit of 2.1 surround sound speakers and a subwoofer. The chair connects directly or indirectly to almost any device with an audio output this includes PS5, PS4, PS3, Wii, Xbox X, Xbox One, Xbox360, Nintendo Switch, televisions, MP3 players, smart phones and the like. Please note that it will often be necessary, and usually preferable due to inherent latency issues, to connect the gaming chair to the games console indirectly via the tv/monitor. If the audio device that you are connecting to does not have analogue audio output (eg headphone jack or red/white output sockets) but a digital audio output then it may be necessary to purchase a BraZen Digital to Analogue Converter Kit to assist you to connect. Please note you cannot connect via Bluetooth directly to a Sony product - this must be done indirectly. The chair comes with a complimentary selection of analogue audio cables and a UK/EU 12v 1.5amp power adapter. The seat part of the chair is attached to the metal disc base with a gas lift/piston and a base plate mechanism. The chair is not height adjustable. The chair is upholstered with ample foam and a faux leather PU fabric covering for comfort. All the materials used comply with UK Furniture and Furnishings (Fire Safety) Regulations. The chair comes with two solid plastic moulded armrests. The BraZen Stag folds to facilitate ease of carriage and storage. This pedestal chair has the capacity to gently rock on its metal disc base and to swivel 360 degrees – but care must be taken not to place accidental force on the audio and power cables. Suitable in size for a small adult - targeted market for this product is 14 years of age and under. BraZen Technical Support: For any queries with your product please email BraZen Technical Support – [email protected]. Product warnings include: This product is not a toy. Children should always be supervised by a responsible adult when using. Do NOT assemble chair if you want to return as unwanted. Suffocation Risk: Dispose of packaging safely – keep away from children. Armrests are not designed to be load bearing. Crush hazard - keep hands and fingers away from moving parts. Avoid overloading or changing centre of gravity of chair - risk of injury. We recommend that the chair is assembled by two adults. The tilt tension controller under seat is effectively a non-functioning part of this chair. It should not be adjusted as it is spring loaded and could be dangerous if loosened too much. The chair is mains powered – there is a risk of electrocution if chair is misused. Use appropriate protection on flooring which is susceptible to being marked or scratched.

Black/Green

Amazing chair! 12 yr old son loved it for Xmas. Anonymous. Wed Mar 04 2026

Green

Upgraded new ergonomic gaming chair with a unique appearance and thickly cushioned for maximum comfort, provides you with a comfortable experience when you play the game and use it for ours. 2 Extra pillows help relax your head and waist greatly when lying on the chair at game breaks. It's the best choice, not only can you adjust the height of the chair to suit your needs, but you can also adjust the angle (90 - 170 degrees) of the seatback. You can sleep comfortably in your busy work instead of terrible sleeping.

Easy to construct really comfy. Very sturdy and relaxing game play.. Simon. Sat Apr 25 2026

Green/Grey

The is compact, and comfortable, and features a headrest-mounted analog sound system that provides increased immersion in your favorite games. The is compatible with most major devices, including PS3, PS Vita, Xbox 360, Wii, Wii U, 3DS, etc. Also, the PS4 and Xbox One connect to the RCA analog audio outputs on your TV or socket.

My daughter loves it. I have found her sprawled out asleep in it many a time. She loves playing on her Playstation sitting it or watching TV. I would recommend this for a child or a small adult, I am not sure about a tall person.. Candace. Wed Feb 25 2026

Black/Green

With our Rainbow Series Gaming Chairs, you will find your love whenever you like any color. 83cm High back backrest design, and extra padded seat cushion, meet all age needs. The whole Gaming Chair height can be adjustable from 125cm to 133cm. The seat part height can be adjusted from 47-55cm. and most importantly armrest height adjustable range is 60-68cm.

The product is pretty much as expected - it was easy enough to put together, it probably took about 30 mins to assemble. My son loves it - it looks great. Our original product had a rip in the leather seat but Wayfair replaced it immediately and made the whole process incredibly easy - as usual Wayfair's amazing customer service made up for any product issues!. Lianne. London, GB. Wed Dec 18 2024

Green/Black

This PC gaming chair is a quality genuinely adult sized pc or office style gaming chair. This chair has a strong metal frame and is upholstered in quality materials which comply with the very stringent UK furniture and furnishings (fire safety) regulations. The pc gaming chair has all the features a serious gamer desires to ensure comfort - height and tilts adjustment function, adjustable armrests, moveable neck and back cushions, quality castors and a stylish British design.

Black;Green

Introducing the ultimate hybrid gaming chair, designed for both intense gaming sessions and productive office work. With 4D Multi-Dimension Armrests, you can customize your comfort in every direction—side-to-side, forward and backward, rotate inward or outward, and adjust the height for the perfect fit. When it’s time to relax, the chair reclines up to 155 degrees, giving you the flexibility to kick back between games. Made from durable, anti-abrasive PU material, it’s resistant to wear and tear, and a breeze to clean. Elevate your gaming and work experience with a chair that delivers on all fronts.

Green

The BraZen brand is so highly respected because they have a "no compromise!" approach to price, product quality, and aftersales service - as evidenced by their five-star rating on Trustpilot.co.uk. The BraZen Panther Elite 2.1 Bluetooth surround sound gaming chair is a genuinely big adult-sized chair that is also big on sound and vibration performance. It is compatible with almost any device which produces an audio output including all variants of Nintendo, Playstation, and Xbox consoles. Has two quality speakers and a subwoofer for superb quality surround sound, has separately controllable vibration motors for "rumble feedback", has padded flip armrests, looks stylish, and is comfortable to sit in. The unique British design is legally registered and protected. The chair connects directly or indirectly to almost any device with an audio output including PS5, PS4, PS3, Wii, Xbox X, Xbox One, Xbox360, Nintendo Switch, televisions, MP3 players, smartphones, and the like. The chair comes with a selection of complimentary audio cables to allow it to be connected to the chosen device. This product is not a toy. Children should be supervised by a responsible adult. Do not assemble a gaming chair if you think you may wish to return it as unwanted. Warning: The Tilt Tension Controller under the seat is a non-functioning part on this chair. It should not be adjusted as it is spring loaded and could be dangerous is loosened too much

Very good product and as described. Gordon. Wed Feb 04 2026

Green/Black

If you are a serious gamer, you need an ergonomic office chair to keep up with the demands of your marathon gaming sessions. Your couch may feel comfortable, but you need adequate seating while holding the controller for hours at a time. This high back racing style game chair will outperform your couch with healthier benefits. The ergonomic design of this racing chair offers generous padding with a wing style back to cradle your torso. The padded arms provide a comfortable resting position while holding your controller and relieve pressure off your shoulder and neck. If you're playing on your computer and want to get closer to the action the arms flip backward to pull yourself underneath the desk without having to adjust the seat height. The tilt lock mechanism underneath the seat locks in an upright position when you no longer want to lean and rock back. To be considered a true gamer you need a dedicated gaming chair to take your gaming to new heights, whether you have followers who watch you on a streaming service or like to interact with other gamers online.

Great chair, very comfortable. A bit smaller than I imagined but works great in my space and perfect for working from home.. Lauren. Delaware, OH. Sun Apr 10 2022

Green

Super easy to assemble, clear instructions chair it’s self is very sturdy and comfy, it came very well packaged and super quickly. Bought for a gamer cupboard happy finance happy fiancée ) would highly recommend. Leah. Liverpool. Tue Aug 17 2021

Green/Black

The whole chair is filled with a thick sponge for max comfort. Backrest recliner to max 170° position. Meet most people's needs. 5 mute design casters with a strong base support you. With an extra headrest, massage lumbar pillow, and footpad. You will have a professional-feeling relaxing massage experience in your own home after a long time working or playing games.

I got this for my grandson last year for Christmas. It's absolutely brilliant and comfortable, only thing was there had been a couple of components missing. I got in touch and they were sent out straight away, which I was pleased with. I would recommend this.. Sharon . Belfast. Sun Dec 29 2024

Green

Great chair for my online gaming son. Anonymous. Denny, GB. Thu Jan 23 2020

Black/Green

This gaming chair is a perfect seat for long gaming periods, this faux leather upholstered chair highlights a design that guarantees long-lasting comfort. With the numerous height and armrest adjustment possibilities, you can customize it to your body shape. Added cushioning in the neck and lumbar area offers relief for the spine, and thanks to a pull-out footrest you can fully stretch your legs. If you feel like napping just put the backrest in a fully reclined position and slide out the leg rest.

Der Stuhl ist wirklich super. Schnell zusammen gebaut und laut meinem 11 jährigen Sohn auch sehr bequem. Zu empfehlen…. Yvonne. Monheim Am Rhein, DE. Tue Jun 15 2021

Green

This PC gaming chair is a good looking and comfortable chair designed specifically with the serious gamer in mind. The brand is a brand which is recognised for producing gaming chairs which are "by design best in class!". This is stylishly understated whilst being big on performance. The chair is currently sold in eight colour combinations - grey, blue, white, pink, red, green, yellow and purple. This chair has excellent mobility - it has five quality castors, reclines and has 360 degrees swivelling capability. The seat is height adjustable. The chair has a rocker tilt function. To allow for added comfort to enhance those long gaming sessions the chair has padded head and seat rests and two padded armrests.

Green/Black

With its sleek design and eye-catching colourful highlights, this gaming chair offers a place to work or play in style. Adding a dash of modern design to its surroundings, the chair is available in a range of colours to suit your existing décor. The faux-leather upholstery will keep you comfortable even through long days of use.

Habe den Stuhl für Home school gekauft ft und nicht bereut. Pünktliche und freundliche Lieferung! Stuhl wie beschrieben! Bin zufrieden !!. Fadoua El. Wuppertal, DE. Mon Nov 16 2020

Green

Gaming chair combines pocket spring & breathable foam for superior comfort, with stain-resistant tech fabric for durability. Features 90°-135° reclining, 4D armrests, and 300lb capacity. Enhanced stability with steel-reinforced backrest.

Green

The gaming chairs are ergonomic and versatile and adjustable. The unique design is focused on comfort to work comfortably even after many hours at the computer, especially to maintain a healthy posture or to allow a good posture while playing games. You can comfortably and effectively get the job done and tackle your opponent.

Akord FG33 office chair in green The Akord G33 office chair in green is the perfect companion for all gaming enthusiasts. With a width of 71cm, a height of 135cm and a depth of 70cm, this chair offers the ideal comfort during long gaming sessions. The high-quality imitation leather material in green gives the chair a modern and stylish look. The F4G FG33 gaming chair has silicone and rubber-like castors that allow for easy movement. The backrest material is also made of faux leather and offers optimal support and comfort. The chair is available in black and thus adapts easily to any room design. With a total width of 71cm and a total depth of 70cm, the F4G FG33 gaming chair is large enough to offer you enough space to sit. The seat cushion has a width of 53cm and a depth of 48cm. The total height of the chair is 135cm, while the maximum seat height is 61cm and the minimum seat height is 51cm. The F4G FG33 gaming chair can easily support up to 130kg and weighs only 25kg. The chair has a gas lift mechanism that allows you to adjust the seat height according to your own preferences. It is easy to assemble and comes with all the necessary accessories. With its elegant green design, the F4G FG33 gaming chair is not only a comfortable piece of furniture, but also an eye-catching feature in any gaming room. Order the F4G FG33 gaming chair in green today and enjoy endless hours of fun and comfort while playing your favorite games. Armchair dimensions: Total depth: 70cm Chair height: 135cm Overall width of the chair: 71cm Seat width: 53cm Seat depth: 48cm Maximum seat height: 61cm Minimum seat height: 51cm Specification: Upholstery color: Black and green Upholstery material: Imitation leather Castors: Silicone rubber Backrest: Imitation leather Lifting mechanism: Gas lift Additional function: Adjustment of the seat height Maximum load: 130kg Product weight: 25kg Chair model: F4GFG33G

Green

Love it. Anonymous. Thu Nov 23 2023

Green

This gaming chair is designed with style and comfort in mind so it can be used for hours with no aches or pains. The chair features an ergonomic high back for excellent support, a headrest, and a lumbar cushion that can be adjusted to your desired position. Made from high-quality PU faux leather and quality padding for extra comfort, the chair can be adjusted to your desired height using the gas lift mechanism and can be adjusted to your preferred angle using the reclining mechanism. The chair reclines from 90° to 170°. It is suitable to be used on carpeted, laminated, and tile flooring. Being lightweight yet sturdy, it can be transported from room to room easily.

Although there is a slight misalignment with one of the holes for the screws for the peice that connects to the back, other than that, for me at least, the seat is comfy, not to hard and not to soft and holds up well for long periods of sitting, the recline feature is amazing for if you just need to lie back and clear your head or stretch, the included cusions have been great, all in all, A great purchase.. Steven. Smethwick, GB. Mon Jan 24 2022

Midnight Green

Revolutionizing health and comfort, the Vertagear Racing Series is engineered to tailor itself to your ergonomic needs. The chair’s contouring backrest and cutting-edge seat design puts your health first and lets you game, work, or study in prolonged comfort. Up your game even further with the chair, its upgradeable wireless PC control RGB LED kit with game and audio sync as well as light sync of RGB kits and boost your team morale with your own customized logo on Vertagear chair, engineered ergonomically for your comfort, stamina and performance when gaming and streaming for countless hours.

Green/Black

Introducing the ultimate gaming chair that will take your gaming experience to new heights! Get ready to immerse yourself in the world of virtual reality with our top-of-the-line gaming chair. Unleash Your Gaming Potential Experience gaming like never before with our 100% POLYURETHANE gaming chair. Designed with your comfort in mind, this chair will provide you with the ultimate support and relaxation during those intense gaming sessions. Its ergonomic design ensures that you maintain the perfect posture, allowing you to focus on your game and perform at your best. Unmatched Style and Durability With its sleek and modern design, our gaming chair is not only a functional piece of furniture but also a stylish addition to your gaming setup. The striking combination of colors adds a touch of excitement and energy to your gaming space. Crafted with the highest quality materials, this chair is built to last, ensuring that it withstands the test of time and keeps up with your gaming adventures. Customizable for Your Comfort We understand that every gamer is unique, which is why our gaming chair comes with adjustable seat height. Whether you prefer a higher or lower seat, you can easily customize it to fit your needs. The plastic legs provide stability and support, giving you the confidence to conquer any virtual world. Technical Details: • Product Type: Gaming Chair • Material: 100% POLYURETHANE • Width: 62 cm • Height: 120 cm • Depth: 46 cm • Seat Height: 57 cm • Legs: Plastic • Adjustable Seat Height and Upgrade your gaming setup with our gaming chair and elevate your gaming experience to a whole new level. Don't settle for anything less than the best. Order now and unleash your gaming potential!

Green

Black/Green

This premium gaming chair features an innovative spring cushion system that dynamically adjusts to your body, providing customized support and plush comfort. The open-concept seat design accommodates all body types, while the oversized headrest with relaxation features and storage compartments enhance ergonomic support. Enjoy versatile positioning from upright work to reclined rest, with an extendable footrest and reinforced lift mechanism